Hi all,

I have an issue regarding removing BC and convergence. Basically I have a beam fixed at one end (initial step) and subjected to a vertical displacement at the other end (1st step). In the 2nd step, I want to remove this vertical displacement. Both are *visco steps.

The problem was not converged when I tried to diactivate the vertical displacement. Automatic stabilization can help however It seems not to be ok due to the high value of the static dissipation ALLSD compared to the internal energy ALLIE.

My question is: are there anyway to add spring or dashspot at the displacement end as a BC so that the system can be stable and thus the problem can be converged? I have tried to add spring/dashspots in interaction module, however, it still didnot work.

Thank you for any suggestions or comments.